*{
            margin: 0%;
            padding: 0% ;
        }
        h1{
            color:rgb(196, 224, 245);
            font-size:100px;
            text-align: center;
        }
        .z{
            width: 1500px;
            height: 800px;
            background-image:url(./主体.png);
        }
        .one{
            width: 200px;
            height: 80px;
            text-align: center;
            margin:auto;
        }
        .two{
            width: 200px;
            height: 80px;
            text-align: center;
            margin:auto;
        }
        .three{
            width: 200px;
            height: 80px;
            text-align: center;
            margin:auto;
        }
        .four{
            width: 200px;
            height: 50px;
            text-align: center;
            margin:auto;
        }
        a{
            font-size: 40px;
        }
        a:link{
            text-decoration: none;
            color:rgb(145, 145, 251);
        }
        a:hover{
            text-decoration: dashed;
            color:aqua;
        }
        a:visited{
            text-decoration: none;
            color:rgb(212, 212, 247);
        }
        .f{
            padding-top: 100px;
        }